11-07-2023, 12:58 PM
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#1
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Heated steering wheel mod - success!
EDIT: It has come up that the OEM NON-HEATED clockspring is not sufficient enough to handle a heating pad. I plan to tweak this mod and make changes to heir on the side of safety. Please see post #54 for link to the other forum which goes into more detail.
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So I plan to add heat to my 2015 SR5P steering wheel. After reading this thread I am convinced that it can be done to our 4Runners.
DIY: Heated Steering Wheel | Toyota Nation Forum
I recently bought a used cheap steering wheel which matched what I currently have from Facebook marketplace. Bought it to examine, take apart, etc.
So this is the first thing I need help with;
The 2 connectors inside the steering wheel have empty slots. I plan to use them to run the wire(s) from/to the heat pads/switch. My question is, where do these connectors end up (through the clockspring) and on the other side of the steering wheel? And specifically, which wire(s) on the backside relate to the blank slots on the connectors? I am not an automotive electrical expert nor good at reading wiring diagrams but I am willing to tackle this mod if I can get some expert help. Any advice or leads on where to start looking would be greatly appreciated! Here are the 2 connectors in question which shows the empty slots I plan to use;
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Last edited by emmantik; 01-19-2024 at 03:24 PM.
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11-09-2023, 01:02 PM
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#2
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I removed the leather upholstery in preparation for the heating pads. Here's what your steering wheel looks like without it's skin.
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11-09-2023, 01:12 PM
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#3
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So the clockspring has 2 plugs/harnesses on the bottom of it where the wires come out of, the yellow one is ABS, and the other one is for the steering wheel controls, it's directly under the clockspring on the bottom. Curious to see how you accomplish this, very cool mod if you can pull it off
It's the black harness shown here
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2017 Nautical Blue SR5 Premium - Black Emblems, AFE 76mm TB, AFE Momentum GT Intake, URD MAF Calibrator, Borla Touring Cat-Back Exhaust, VR ECU Tune, RCI Skid Plate, Morimoto MLED 2.0 Headlight Retrofit, Morimoto LED Fogs, Eagle Eye Smoked Black Tail Lights, FyreFlys LED Interior, Meso Puddle Lights, Tinted Mirror Turn Signals, Smoked Amber Raptor Lights, Odyssey 34 Battery, 32" LED Bar with Rago Hidden Brackets, Rago Molle Panels, Side Shooter LED Ditch Lights, sPod w/ PowerTray, Raceline Matte Bronze Wheels w/ Cooper Discoverer RTX, CaliRaised Rock Sliders, BajaRack Full Length Roof Rack, Kenwood DMX1057XR, Infinity Kappa Door Speakers and 3.5's in dash, JL 8w3v3 in JBL Enclosure, Husky Weather Beaters, Blackvue DR900S Dash Cams
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11-09-2023, 02:41 PM
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#4
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Quote:
Originally Posted by 97BlackAckCL
So the clockspring has 2 plugs/harnesses on the bottom of it where the wires come out of, the yellow one is ABS, and the other one is for the steering wheel controls, it's directly under the clockspring on the bottom. Curious to see how you accomplish this, very cool mod if you can pull it off
It's the black harness shown here
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Thanks! I plan to explore it this weekend. Not looking forward to moving the airbag out of the way so I can get a multimeter to the pins on the connectors. But from what I've read it should be fairly easy and straightforward. I think the most important thing is to disconnect the battery for at least 15mins. I will report back with my findings.
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11-09-2023, 02:54 PM
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#5
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Just ordered the heating pads from Amazon Canada. Cost me just under $20!
Here is what I ordered;
Amazon.ca
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11-09-2023, 02:57 PM
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#6
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Quote:
Originally Posted by emmantik
Thanks! I plan to explore it this weekend. Not looking forward to moving the airbag out of the way so I can get a multimeter to the pins on the connectors. But from what I've read it should be fairly easy and straightforward. I think the most important thing is to disconnect the battery for at least 15mins. I will report back with my findings.
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Yep, as someone who's had their steering wheel and airbag off a lot in the last month, the biggest thing is unhooking the battery and waiting so the airbag is decharged. Removing the steering wheel is very straight forward, however I recommend a steering wheel puller for the first time
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2017 Nautical Blue SR5 Premium - Black Emblems, AFE 76mm TB, AFE Momentum GT Intake, URD MAF Calibrator, Borla Touring Cat-Back Exhaust, VR ECU Tune, RCI Skid Plate, Morimoto MLED 2.0 Headlight Retrofit, Morimoto LED Fogs, Eagle Eye Smoked Black Tail Lights, FyreFlys LED Interior, Meso Puddle Lights, Tinted Mirror Turn Signals, Smoked Amber Raptor Lights, Odyssey 34 Battery, 32" LED Bar with Rago Hidden Brackets, Rago Molle Panels, Side Shooter LED Ditch Lights, sPod w/ PowerTray, Raceline Matte Bronze Wheels w/ Cooper Discoverer RTX, CaliRaised Rock Sliders, BajaRack Full Length Roof Rack, Kenwood DMX1057XR, Infinity Kappa Door Speakers and 3.5's in dash, JL 8w3v3 in JBL Enclosure, Husky Weather Beaters, Blackvue DR900S Dash Cams
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11-09-2023, 03:07 PM
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#7
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Quote:
Originally Posted by 97BlackAckCL
Yep, as someone who's had their steering wheel and airbag off a lot in the last month, the biggest thing is unhooking the battery and waiting so the airbag is decharged. Removing the steering wheel is very straight forward, however I recommend a steering wheel puller for the first time
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I'll look into it!
Would it not be possible by hand? Or is a puller used to reduce damage?
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11-09-2023, 07:17 PM
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#8
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Quote:
Originally Posted by 97BlackAckCL
So the clockspring has 2 plugs/harnesses on the bottom of it where the wires come out of, the yellow one is ABS, and the other one is for the steering wheel controls, it's directly under the clockspring on the bottom. Curious to see how you accomplish this, very cool mod if you can pull it off
It's the black harness shown here
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Would you happen to have a pic of the connectors behind the airbag? I won't tackle this for a few days and was just wondering if male ends correspond to the blank slots on the connector. No worries if you don't. Thanks!
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11-10-2023, 11:36 AM
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#9
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Quote:
Originally Posted by emmantik
Would you happen to have a pic of the connectors behind the airbag? I won't tackle this for a few days and was just wondering if male ends correspond to the blank slots on the connector. No worries if you don't. Thanks!
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The airbag connectors are the black and orange wires shown coming out of the clockspring? The 2 plugs you showed plug into the clockspring in the ports to the right of there
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2017 Nautical Blue SR5 Premium - Black Emblems, AFE 76mm TB, AFE Momentum GT Intake, URD MAF Calibrator, Borla Touring Cat-Back Exhaust, VR ECU Tune, RCI Skid Plate, Morimoto MLED 2.0 Headlight Retrofit, Morimoto LED Fogs, Eagle Eye Smoked Black Tail Lights, FyreFlys LED Interior, Meso Puddle Lights, Tinted Mirror Turn Signals, Smoked Amber Raptor Lights, Odyssey 34 Battery, 32" LED Bar with Rago Hidden Brackets, Rago Molle Panels, Side Shooter LED Ditch Lights, sPod w/ PowerTray, Raceline Matte Bronze Wheels w/ Cooper Discoverer RTX, CaliRaised Rock Sliders, BajaRack Full Length Roof Rack, Kenwood DMX1057XR, Infinity Kappa Door Speakers and 3.5's in dash, JL 8w3v3 in JBL Enclosure, Husky Weather Beaters, Blackvue DR900S Dash Cams
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11-10-2023, 12:18 PM
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#10
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Quote:
Originally Posted by 97BlackAckCL
The airbag connectors are the black and orange wires shown coming out of the clockspring? The 2 plugs you showed plug into the clockspring in the ports to the right of there
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Sorry the answer was right in front of me! Thanks for clarifying!
So based on your pic it looks like there are male terminal ends that would correspond to the empty slots in the connectors. (Correct me If I'm wrong!) This is a good thing! Now just have to figure out which wires that would be! I will try this Sunday or Monday.
Just thinking out loud, if I find the corresponding wire that is connected to the blank slots, would I be able to tap into that to provide power from say the fuse box to send power to the switch -> heating pads? Or would I have to cut that wire? Just worried that there is something on the other end that would be affected. Why would there be a wire that leads to a blank slot?
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11-10-2023, 12:32 PM
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#11
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Quote:
Originally Posted by emmantik
Sorry the answer was right in front of me! Thanks for clarifying!
So based on your pic it looks like there are male terminal ends that would correspond to the empty slots in the connectors. (Correct me If I'm wrong!) This is a good thing! Now just have to figure out which wires that would be! I will try this Sunday or Monday.
Just thinking out loud, if I find the corresponding wire that is connected to the blank slots, would I be able to tap into that to provide power from say the fuse box to send power to the switch -> heating pads? Or would I have to cut that wire? Just worried that there is something on the other end that would be affected. Why would there be a wire that leads to a blank slot?
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I haven't studied the harness that closely but I would assume the blank spots are empty pins/wires. I have an extra clockspring sitting on my workbench if you want me to send you any pics of the plug
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2017 Nautical Blue SR5 Premium - Black Emblems, AFE 76mm TB, AFE Momentum GT Intake, URD MAF Calibrator, Borla Touring Cat-Back Exhaust, VR ECU Tune, RCI Skid Plate, Morimoto MLED 2.0 Headlight Retrofit, Morimoto LED Fogs, Eagle Eye Smoked Black Tail Lights, FyreFlys LED Interior, Meso Puddle Lights, Tinted Mirror Turn Signals, Smoked Amber Raptor Lights, Odyssey 34 Battery, 32" LED Bar with Rago Hidden Brackets, Rago Molle Panels, Side Shooter LED Ditch Lights, sPod w/ PowerTray, Raceline Matte Bronze Wheels w/ Cooper Discoverer RTX, CaliRaised Rock Sliders, BajaRack Full Length Roof Rack, Kenwood DMX1057XR, Infinity Kappa Door Speakers and 3.5's in dash, JL 8w3v3 in JBL Enclosure, Husky Weather Beaters, Blackvue DR900S Dash Cams
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11-10-2023, 12:45 PM
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#12
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Quote:
Originally Posted by 97BlackAckCL
I haven't studied the harness that closely but I would assume the blank spots are empty pins/wires. I have an extra clockspring sitting on my workbench if you want me to send you any pics of the plug
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No don't worry about it! The only thing to do next is to take it apart and start testing with a multimeter. Until then, not much to do. Thanks for the input so far though!
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11-12-2023, 07:24 PM
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#13
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So today I had time to remove the airbag so I can test the pins/wires of the empty slots with a multimeter. The empty slot as pictured here where the red wire is inserted, corresponds to this pin on the bottom black connector under the clockspring (top row 2nd from the right). Good news is the black connector on the other side also has the empty slot!
Since I have an extra harness for the cruise control, I depinned and removed the wires as shown in the 3rd pic. I will use these to insert into the empy slots on both connectors. One will lead to the heating pad from inside th steering wheel and the other on the clockspring side will go to the fusebox.
Q: Which circuit should I use in the fusebox? Suggestions welcome!
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11-19-2023, 10:50 PM
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#14
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Heating pad came in today! Did a test fit and realized that I need to do some trimming to prevent bunching of the material.
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11-19-2023, 10:53 PM
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#15
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Here's what it looked like after trimming of some material.
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